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Wyszukujesz frazę "75.50.Ee" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-9 z 9
    Tytuł:
    Magnetocaloric effect in antiferromagnetic half-Heusler alloy DyNiSb
    Autorzy:
    Synoradzki, K.
    Ciesielski, K.
    Kaczorowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1050664.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    75.30.Sg
    Opis:
    The low-temperature magnetic, thermal and magnetocaloric properties of the half-Heusler compound DyNiSb were studied on polycrystalline samples. The temperature variations of the magnetization and the heat capacity revealed a phase transition from paramagnetic to antiferromagnetic state at the Néel temperature T_{N} = 3.1 K. The compound exhibits normal and inverse magnetocaloric effect with the isothermal magnetic entropy change reaching 5.2 J/(kg K) at 4.8 K for a magnetic field change of 3 T. The estimated refrigerant capacity is about 58 J/kg.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 691-693
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Ordering in $ErFe_{0.3}Ge_{2}$ and $ErNi_{0.65}Ge_{2}$ Compounds
    Autorzy:
    Penc, B.
    Arulraj, A.
    Kaczorowski, D.
    Szytuła, A.
    Wawrzyńska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1538339.pdf
    Data publikacji:
    2010-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.20.Lp
    75.50.Ee
    Opis:
    The magnetic ordering in $ErFe_{0.3}Ge_{2}$ and $ErNi_{0.65}Ge_{2}$ compounds crystallizing in the orthorhombic structure of the $CeNiSi_{2}$-type has been investigated by neutron diffraction and magnetic measurements. The Er magnetic moments have been found to order antiferromagnetically below 2.5 K in $ErFe_{0.3}Ge_{2}$ and 2.3 K in $ErNi_{0.65}Ge_{2}$. The magnetic structure of the former compound can be described by the propagation vector k = (0.044(1), 0, 0.384(1)). The Er magnetic moments are aligned along the a-axis and alternate with the sequence ++- in the unit cell. At 1.5 K they are equal to 5.9(1) $μ_{B}$. In contrast, the magnetic unit cell of $ErNi_{0.65}Ge_{2}$ has been established to be equal to the chemical one. The magnetic moments in this compound are arranged in a collinear manner pointing along the a-axis with the sequence +-+-. The Er moment value measured at 1.5 K is 2.90(8) $μ_{B}$.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 4; 595-598
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low-Temperature Physical Properties of Single-Crystalline EuCoGe₃ and EuRhGe₃
    Autorzy:
    Bednarchuk, O.
    Kaczorowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1386301.pdf
    Data publikacji:
    2015-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    72.15.-v
    65.40.-b
    Opis:
    Since a few years europium-based intermetallics have been attracting more and more attention due to their intriguing physical properties with anomalous behaviours in magnetically ordered states. Here, we report on the formation and the bulk physical properties of two tetragonal compounds EuCoGe₃ and EuRhGe₃, studied on high-quality single-crystalline specimens. In both materials, the Eu ions are in their divalent state, which gives rise to an antiferromagnetic ordering below $T_{N}$ = 15.4 K and $T_{N}$ = 11.3 K, respectively. In addition, EuCoGe₃ exhibits a successive antiferromagnetic phase transition at T₂ = 13.4 K. Based on some characteristic features in the temperature variations of the magnetic susceptibility, specific heat and electrical resistivity, we suggest that in both germanides an amplitude modulated magnetic structure develops below the respective $T_{N}$, with the Eu magnetic moments directed along the crystallographic [001] axis in EuCoGe₃ and perpendicular to this direction in EuRhGe₃.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 2; 418-420
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Co Doping on Crystal and Magnetic Properties of $Gd_2Cu_2In$
    Autorzy:
    Gondek, Ł.
    Szytuła, A.
    Kaczorowski, D.
    Szewczyk, A.
    Gutowska, M.
    Tyvanchuk, Yu.
    Kalychak, Ya.
    Powiązania:
    https://bibliotekanauki.pl/articles/1419907.pdf
    Data publikacji:
    2012-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.30.Kz
    75.50.Ee
    Opis:
    Physical properties of $Gd_2Cu_{2 - x}Co_{x}In$ (x = 0.1, 0.2, 0.3) samples are investigated. The paper brings results of X-ray diffraction, magnetometric as well as specific heat studies. It was found that only sample with x = 0.1 exhibits desired crystal structure. Other compositions show existence of impurities due to lack of dissolution Co atoms. For $Gd_2Cu_{1.9}Co_{0.1}In$ sample the Curie temperature of 92.5 K was evidenced. Thus, an enhancement of ferromagnetic correlations with comparison to $Gd_2Cu_2In$ sample was evidenced. It was found that $Gd_2Cu_{1.9}Co_{0.1}In$ sample exhibits magnetocaloric effect within broad temperature range.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 1; 216-219
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermoelectric Power of Single-Crystalline $Ce_{2}RhSi_{3}$
    Autorzy:
    Szlawska, M.
    Kaczorowski, D.
    Plackowski, T.
    Gulay, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810404.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.27.+a
    75.50.Ee
    72.15.Jf
    Opis:
    High-quality single crystal of $Ce_{2}RhSi_{3}$ was studied by means of thermoelectric power measurements carried out down to 2 K in external magnetic fields up to 13 T. The results obtained above 50 K were interpreted in terms of a modified two-band model that takes into account temperature variation of the width of 4f-derived narrow band located near the Fermi level. At lower temperatures the thermopower exhibits more complex temperature dependences that likely involve interplays of magnetic exchange, Kondo and crystal-field interactions.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 132-134
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic and Electronic Properties in Series of $GdT_{x}Ga_{4-x}$ Solid Solutions (T = Ni or Cu)
    Autorzy:
    Wiśniewski, P.
    Gorzelniak, R.
    Kaczorowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1385707.pdf
    Data publikacji:
    2015-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    72.15.-v
    72.15.Jf
    Opis:
    We present results of extensive measurements of magnetic susceptibility, electrical resistance, specific heat and thermoelectric power of two series of solid solutions $GdNi_{x}Ga_{4-x}$ and $GdCu_{x}Ga_{4-x}$, for ranges of doping x from 0.6 to 1 and from 1 to 1.5, respectively. All studied phases display the Curie-Weiss behaviour of magnetic susceptibility and antiferromagnetic ordering at temperatures below 23 K. Substitution of gallium with transition metal atoms has strong influence on Néel temperatures of all studied phases, shifting them by few K, depending on x. Metamagnetic-like anomalies are observed for some compositions. Behaviour of the electrical resistivity reveals metallic nature of all samples. Their magnetic ordering is reflected in low-temperature anomalies of the resistivity and the heat capacity.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 2; 382-384
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-Step Magnetic Phase Transition in $CeRh_3Si_2$ Studied by Specific Heat Measurements
    Autorzy:
    Pikul, A.
    Kaczorowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810486.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Mb
    75.50.Ee
    75.30.Kz
    65.40.Ba
    Opis:
    High-quality single crystal of a novel cerium silicide $CeRh_3Si_2$, crystallizing with the orthorhombic $ErRh_3Si_2$-type structure, was grown by the Czochralski pulling method and studied by means of specific heat measurements. The antiferromagnetic ordering of the compound manifests itself as a pronounced lambda-shaped anomaly at $T_N$ = 4.72(3) K, and is followed by a spike-shaped anomaly due to spin reorientation at $T_t$ = 4.48(2) K, in good agreement with the previously reported magnetic susceptibility data. Both transitions are very sensitive to applied magnetic field - they split into four separate anomalies, which independently shift to lower temperatures with rising field. Several scenarios are proposed as possible explanations of the multi-step character of the magnetic ordering in $CeRh_3Si_2$.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 235-237
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antiferromagnetic order in the half-Heusler phase TbPdBi
    Autorzy:
    Pavlosiuk, O.
    Kleinert, M.
    Wiśniewski, P.
    Kaczorowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1047687.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Ee
    75.80.+q
    71.55.Ak
    72.15.Eb
    Opis:
    Single crystals of TbPdBi, a representative of the group of half-Heusler bismuthides, were studied by means of magnetic susceptibility, heat capacity, electrical resistivity, magnetostriction and thermal expansion measurements. The compound was characterized as an antiferromagnet with the Néel temperature T_{N} ≈5.3 K. Neutron diffraction experiment confirmed the antiferromagnetic ordering and yielded the propagation vector k=(1/2,1/2,1/2). Remarkably, this k vector is in accord with the recently developed theory of antiferromagnetic topological insulators.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 498-500
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic and Related Properties of Ternary TmTX Intermetallics
    Autorzy:
    Kaczorowski, D.
    Szytuła, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1387896.pdf
    Data publikacji:
    2015-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.30.Cr
    75.30.Kz
    75.50.Ee
    75.47.Np
    75.40.Cx
    Opis:
    We report on the magnetic and thermal properties of a few TmTX compounds, where T = d-electron metal and X = p-electron element. In all these ternaries but TmRuGe the thulium magnetic moments order antiferro- or ferromagnetically at low temperatures. The specific heat data confirms the magnetic orderings and reveals the influence of crystalline electric field effects.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 2; 620-622
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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